Vulnerabilities > CVE-2019-15794 - Operation on a Resource after Expiration or Release vulnerability in multiple products

047910
CVSS 7.2 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
low complexity
linux
canonical
CWE-672
nessus
exploit available
NVD
Published: 2020-04-24
Updated: 2020-05-01

Summary

Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma->vm_file in their mmap handlers. On error the original value is not restored, and the reference is put for the file to which vm_file points. On upstream kernels this is not an issue, as no callers dereference vm_file following after call_mmap() returns an error. However, the aufs patchs change mmap_region() to replace the fput() using a local variable with vma_fput(), which will fput() vm_file, leading to a refcount underflow.

Vulnerable Configurations

Part Description Count
OS
Linux
2
OS
Canonical
2

Common Weakness Enumeration (CWE)

Exploit-Db

idEDB-ID:47692
last seen2019-11-20
modified2019-11-20
published2019-11-20
reporterExploit-DB
sourcehttps://www.exploit-db.com/download/47692
titleUbuntu 19.10 - ubuntu-aufs-modified mmap_region() Breaks Refcounting in overlayfs/shiftfs Error Path

Nessus

  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-4209-1.NASL
    descriptionJann Horn discovered that the OverlayFS and ShiftFS Drivers in the Linux kernel did not properly handle reference counting during memory mapping operations when used in conjunction with AUFS. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-15794) It was discovered that a buffer overflow existed in the 802.11 Wi-Fi configuration interface for the Linux kernel when handling beacon settings. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-16746) It was discovered that there was a memory leak in the Advanced Buffer Management functionality of the Netronome NFP4000/NFP6000 NIC Driver in the Linux kernel during certain error scenarios. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19076). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id131563
    published2019-12-03
    reporterUbuntu Security Notice (C) 2019 Canonical, Inc. / NASL script (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/131563
    titleUbuntu 18.04 LTS / 19.04 : linux, linux-aws, linux-aws-5.0, linux-gcp, linux-gke-5.0, linux-hwe, (USN-4209-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4209-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(131563);
  script_version("1.2");
  script_cvs_date("Date: 2019/12/09");

  script_cve_id("CVE-2019-15794", "CVE-2019-16746", "CVE-2019-19076");
  script_xref(name:"USN", value:"4209-1");

  script_name(english:"Ubuntu 18.04 LTS / 19.04 : linux, linux-aws, linux-aws-5.0, linux-gcp, linux-gke-5.0, linux-hwe, (USN-4209-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Jann Horn discovered that the OverlayFS and ShiftFS Drivers in the
Linux kernel did not properly handle reference counting during memory
mapping operations when used in conjunction with AUFS. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2019-15794)

It was discovered that a buffer overflow existed in the 802.11 Wi-Fi
configuration interface for the Linux kernel when handling beacon
settings. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2019-16746)

It was discovered that there was a memory leak in the Advanced Buffer
Management functionality of the Netronome NFP4000/NFP6000 NIC Driver
in the Linux kernel during certain error scenarios. A local attacker
could use this to cause a denial of service (memory exhaustion).
(CVE-2019-19076).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/4209-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-16746");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-oem-osp1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-aws-edge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gke-5.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-osp1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle-edge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2019 Canonical, Inc. / NASL script (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("ksplice.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(18\.04|19\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 18.04 / 19.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2019-15794", "CVE-2019-16746", "CVE-2019-19076");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-4209-1");
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

flag = 0;

if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-1008-oracle", pkgver:"5.0.0-1008.13~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-1022-aws", pkgver:"5.0.0-1022.25~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-1026-gcp", pkgver:"5.0.0-1026.27~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-1026-gke", pkgver:"5.0.0-1026.27~18.04.2")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-1030-oem-osp1", pkgver:"5.0.0-1030.34")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-37-generic", pkgver:"5.0.0-37.40~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-37-generic-lpae", pkgver:"5.0.0-37.40~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.0.0-37-lowlatency", pkgver:"5.0.0-37.40~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-aws-edge", pkgver:"5.0.0.1022.36")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-gcp", pkgver:"5.0.0.1026.30")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-generic-hwe-18.04", pkgver:"5.0.0.37.95")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-generic-lpae-hwe-18.04", pkgver:"5.0.0.37.95")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-gke-5.0", pkgver:"5.0.0.1026.15")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-lowlatency-hwe-18.04", pkgver:"5.0.0.37.95")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-oem-osp1", pkgver:"5.0.0.1030.34")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-oracle-edge", pkgver:"5.0.0.1008.7")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-snapdragon-hwe-18.04", pkgver:"5.0.0.37.95")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-virtual-hwe-18.04", pkgver:"5.0.0.37.95")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-1008-oracle", pkgver:"5.0.0-1008.13")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-1022-aws", pkgver:"5.0.0-1022.25")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-1023-kvm", pkgver:"5.0.0-1023.25")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-1023-raspi2", pkgver:"5.0.0-1023.24")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-1026-gcp", pkgver:"5.0.0-1026.27")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-37-generic", pkgver:"5.0.0-37.40")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-37-generic-lpae", pkgver:"5.0.0-37.40")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-5.0.0-37-lowlatency", pkgver:"5.0.0-37.40")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-aws", pkgver:"5.0.0.1022.24")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-gcp", pkgver:"5.0.0.1026.51")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-generic", pkgver:"5.0.0.37.39")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-generic-lpae", pkgver:"5.0.0.37.39")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-gke", pkgver:"5.0.0.1026.51")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-kvm", pkgver:"5.0.0.1023.24")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-lowlatency", pkgver:"5.0.0.37.39")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-oracle", pkgver:"5.0.0.1008.34")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-raspi2", pkgver:"5.0.0.1023.21")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"linux-image-virtual", pkgver:"5.0.0.37.39")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "linux-image-5.0-aws / linux-image-5.0-gcp / linux-image-5.0-generic / etc");
}
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-4208-1.NASL
    descriptionJann Horn discovered that the OverlayFS and ShiftFS Drivers in the Linux kernel did not properly handle reference counting during memory mapping operations when used in conjunction with AUFS. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-15794) Nicolas Waisman discovered that the WiFi driver stack in the Linux kernel did not properly validate SSID lengths. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2019-17133) It was discovered that the ARM Komeda display driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-18810) It was discovered that the VirtualBox guest driver implementation in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19048) It was discovered that the ADIS16400 IIO IMU Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19060, CVE-2019-19061) It was discovered that the Intel OPA Gen1 Infiniband Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19065) It was discovered that the AMD Audio CoProcessor Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker with the ability to load modules could use this to cause a denial of service (memory exhaustion). (CVE-2019-19067) It was discovered in the Qualcomm FastRPC Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19069) It was discovered that the Cascoda CA8210 SPI 802.15.4 wireless controller driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19075) It was discovered that the AMD Display Engine Driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attack could use this to cause a denial of service (memory exhaustion). (CVE-2019-19083) Nicolas Waisman discovered that the Chelsio T4/T5 RDMA Driver for the Linux kernel performed DMA from a kernel stack. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-17075). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id131562
    published2019-12-03
    reporterUbuntu Security Notice (C) 2019 Canonical, Inc. / NASL script (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/131562
    titleUbuntu 18.04 LTS / 19.10 : linux, linux-aws, linux-gcp, linux-gcp-5.3, linux-kvm, linux-oracle (USN-4208-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4208-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(131562);
  script_version("1.2");
  script_cvs_date("Date: 2019/12/09");

  script_cve_id("CVE-2019-15794", "CVE-2019-17075", "CVE-2019-17133", "CVE-2019-18810", "CVE-2019-19048", "CVE-2019-19060", "CVE-2019-19061", "CVE-2019-19065", "CVE-2019-19067", "CVE-2019-19069", "CVE-2019-19075", "CVE-2019-19083");
  script_xref(name:"USN", value:"4208-1");

  script_name(english:"Ubuntu 18.04 LTS / 19.10 : linux, linux-aws, linux-gcp, linux-gcp-5.3, linux-kvm, linux-oracle (USN-4208-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Jann Horn discovered that the OverlayFS and ShiftFS Drivers in the
Linux kernel did not properly handle reference counting during memory
mapping operations when used in conjunction with AUFS. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2019-15794)

Nicolas Waisman discovered that the WiFi driver stack in the Linux
kernel did not properly validate SSID lengths. A physically proximate
attacker could use this to cause a denial of service (system crash).
(CVE-2019-17133)

It was discovered that the ARM Komeda display driver for the Linux
kernel did not properly deallocate memory in certain error conditions.
A local attacker could use this to cause a denial of service (memory
exhaustion). (CVE-2019-18810)

It was discovered that the VirtualBox guest driver implementation in
the Linux kernel did not properly deallocate memory in certain error
conditions. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2019-19048)

It was discovered that the ADIS16400 IIO IMU Driver for the Linux
kernel did not properly deallocate memory in certain error conditions.
A local attacker could use this to cause a denial of service (memory
exhaustion). (CVE-2019-19060, CVE-2019-19061)

It was discovered that the Intel OPA Gen1 Infiniband Driver for the
Linux kernel did not properly deallocate memory in certain error
conditions. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2019-19065)

It was discovered that the AMD Audio CoProcessor Driver for the Linux
kernel did not properly deallocate memory in certain error conditions.
A local attacker with the ability to load modules could use this to
cause a denial of service (memory exhaustion). (CVE-2019-19067)

It was discovered in the Qualcomm FastRPC Driver for the Linux kernel
did not properly deallocate memory in certain error conditions. A
local attacker could use this to cause a denial of service (memory
exhaustion). (CVE-2019-19069)

It was discovered that the Cascoda CA8210 SPI 802.15.4 wireless
controller driver for the Linux kernel did not properly deallocate
memory in certain error conditions. A local attacker could use this to
cause a denial of service (memory exhaustion). (CVE-2019-19075)

It was discovered that the AMD Display Engine Driver in the Linux
kernel did not properly deallocate memory in certain error conditions.
A local attack could use this to cause a denial of service (memory
exhaustion). (CVE-2019-19083)

Nicolas Waisman discovered that the Chelsio T4/T5 RDMA Driver for the
Linux kernel performed DMA from a kernel stack. A local attacker could
use this to cause a denial of service (system crash). (CVE-2019-17075).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/4208-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-17133");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-snapdragon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp-edge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2019 Canonical, Inc. / NASL script (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("ksplice.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(18\.04|19\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 18.04 / 19.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2019-15794", "CVE-2019-17075", "CVE-2019-17133", "CVE-2019-18810", "CVE-2019-19048", "CVE-2019-19060", "CVE-2019-19061", "CVE-2019-19065", "CVE-2019-19067", "CVE-2019-19069", "CVE-2019-19075", "CVE-2019-19083");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-4208-1");
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

flag = 0;

if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.3.0-1009-gcp", pkgver:"5.3.0-1009.10~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-gcp-edge", pkgver:"5.3.0.1009.9")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-1007-oracle", pkgver:"5.3.0-1007.8")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-1008-aws", pkgver:"5.3.0-1008.9")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-1008-kvm", pkgver:"5.3.0-1008.9")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-1009-gcp", pkgver:"5.3.0-1009.10")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-24-generic", pkgver:"5.3.0-24.26")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-24-generic-lpae", pkgver:"5.3.0-24.26")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-24-lowlatency", pkgver:"5.3.0-24.26")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-24-snapdragon", pkgver:"5.3.0-24.26")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-aws", pkgver:"5.3.0.1008.10")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-gcp", pkgver:"5.3.0.1009.10")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-generic", pkgver:"5.3.0.24.28")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-generic-lpae", pkgver:"5.3.0.24.28")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-gke", pkgver:"5.3.0.1009.10")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-kvm", pkgver:"5.3.0.1008.10")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-lowlatency", pkgver:"5.3.0.24.28")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-oracle", pkgver:"5.3.0.1007.8")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-snapdragon", pkgver:"5.3.0.24.28")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-virtual", pkgver:"5.3.0.24.28")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "linux-image-5.3-aws / linux-image-5.3-gcp / linux-image-5.3-generic / etc");
}

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/155249/GS20191112163110.txt
idPACKETSTORM:155249
last seen2019-11-14
published2019-11-12
reporterJann Horn
sourcehttps://packetstormsecurity.com/files/155249/Ubuntu-ubuntu-aufs-modified-mmap_region-Refcounting-Issue.html
titleUbuntu ubuntu-aufs-modified mmap_region() Refcounting Issue

References